

REVIEWS. 607 
self to death against the iron. Both shoulder blades and 
one coracoid were broken; the other coracoid was dislocated ; 
there was a double fracture of the merry-thought, and a 
crack in the keel of the breastbone; while all the muscles 
of the breast were terribly bruised, and full of blood-clots. 

REVIEWS. 
oe 
HUXLEY’s CLASSIFICATION OF ANIMALS. Continued from Page 546.— 
Professor Huxley very clearly sets forth the characteristics of the group, 
Subkingdom, of VERTEBRATA, and as plainly indicates the three Prov- 
inces into which it is divisible, viz: I. The ICHTHYOPSIDA, comprising the 
Fishes and Amphibians; "a Te "— comprising we Reptiles and 

Birds; III. The Mamma y well marked, 
and the affinities of dus: tiec have for a long time been noticed and 
agreed to. No one can doubt the close relationship existing between the 
Fishes and Amphibians (Salamanders, Frogs, etc.,); and since the dis- 
covery of the remarkable fossil form of Archaeopteryx, which has been 
oroughly 
close affinity; neither can the distinctive characters of the class of Mam- 
malia be questioned, though as has often been pointed out, and as Prof. 
Huxley also insists upon, the Mammals, Birds and Reptiles, or the Abran- 
chiate Vertebrata, have certain characteristics in common, distinguishing 
them from the equally well defined group of Amphibians and Fishes, or 
the Branchiate Vertebrata. 
In adopting M. de Blainville’s three primary divisions of the Mammalia, 
as characterized by the reproductive organs, especially those of the fe- 
male, Prof. Huxley states that he does **not mean to assert that M. de 
Blainville defined these different groups in a manner altogether satis- 
actory, or strictly in accordance with all the subsequently discovered 
facts of science, but his great knowledge and acute intuition led him t 
reside that the groups thus named were truly natural divisions of lis 
mmalia. And the enlargement of our knowledge by aa inves- 
Mitos seems to me, in the main, only to have confirme lainville's 
S." These primary divisions, or subclasses, are the saderah 
hich, f 
.in five groups. Without either endorsing or attemptin to disprove 
Prof. Huxley's views in relation to the special classification kar the Mam- 
